Brick-kiln.



C. STEADMAN & H. 0. ROBINSDN.

BRICK KILN.

APPLICATION FILED FEB. 6, 191a.

Patented Jan. 18, 1916.

mttozme yvd/ 116 M THE COLUMBIA PLAYOGRA-PH C0" WASHINGTON, B- C.

UMTED %TATE@ PATENT @Fldlwm CHRISTOPHER STEAIDMAN, 0F HUGUENOT PARK, NEW YORK, AND HENRY 0. ROBINSON,

OF BBOOKLINE, MASSACHUSETTS.

BBICK-KILN.

Application filed February 6, 1913.

To all whom it may concern:

Be it known that we, CHRISTOPHER STEAD- MAN, a citizen of the United States, residing in Huguenot Park, county of Richmond, State of New York, and HENRY O. ROBIN- SON, a citizen of the United States, residing in Brookline, Norfolk county, State of Massachusetts, have invented an Improvement in Brick-Kilns, of which the following description, in connectionwith the accompanying drawings, is a specification, like letters on the drawings representing like parts.

One of the difficulties encountered in utilizing fine grades of anthracite for brickkiln furnaces has been the impossibility of securing an even burning of the bed of fuel and av proper control and regulation of the fires. While the latter has been attempted by introducing forced-draft devices of various sorts, the realization of a practical system of fire-control, so necessary in brickburning operations, has failed for one reason or another; with the result that comparatively little brick-burning of this kind has been doneon a commercial scale. Our investigations in this field have shown that one of the principal reasons why a proper burning of the fuel, as well as regulation and control of the fires, could not be obtained with the forced-draft, was because":

the forced-draft device was related to the fuel bed in such a way that the blast tended to blow right through the fuel bed, or to separate the fuel like a wedge, and thus find its way out into the fire chamber. This would have the effect of burning the fuel out entirely in spots, and leaving the rest of the fire only remotely and indirectly affected by the forced-draft, whereby the regulation of the blast itself would not have any-- thing like a corresponding efiect upon the fire.

To obviate this difficulty, we have found that if the forced-draft device be so related to the fuel-bed as to deliver downwardly toward the fuel support, the blast will be projected into the fuel-body in such a way as to be first thoroughly divided or comminuted within the fuel-mass and then to rise gradually and uniformly up through the same in an even-flowing homogeneous column as distinguished from a plurality of spouting jets. Thus will the burning be uniform, and any regulation of the forced-draft Specification of Letters Patent.

{of the kiln-floor.

: so, it has been found desirable to seal upon Patented Jan. 18, 1916.

Serial No. 746.477.

will be able to produce acorresponding and uniform effect upon the fires.

In the drawings, a sufficient portion of a brick-kiln is shown to illustrate the improvement. I

Figure 1 being a view in section through the lower part or floor of the kiln, the secresponding spaces above formed by the' arches of green brick (dotted lines) constitute the fire-chambers of the kiln, are built or formed in this permanent floor. These spaces Z) are not a necessity, because the fuel may rest wholly within the arches of green brick upon a support level with the surface However, where this is he side walls of green brick to a point above he fuel-level so that the forced-draft cannot leak through said walls from within the ,fuel bed, a circumstance which tends both to decrease the efficiency of the draft-control and that of the gases of combustion which reach the upper parts of the kiln. Hence, to obviate the sealing of the walls of green brick around the fuel bed, it is preferable to provide the fuel-spaces b.

Each fire-chamber is built within the outer wall 0 of the kiln, opens to the outside through a door f and to the interior of the kiln through the arches and spaces formed by the green brick.

In each of the fire-chambers is a long pipe or hollow burner (Z having its underside perforated along the bottom throughout its entire length to form discharge openings (Z for delivering air or other combustion-sup porting element tothe fuel-body which is denoted by z'and is shown covering the Wise delivered This pipe can be readily set up in position When the kiln is being built and removed when the kiln is burned. For the purpose of supplying the draft, an air or steam duct h is set along the outside ofthe wall CiUflCl a feeder terminatingin a valve 'g' leads therefrom to each hollow I ,1 1.

ourner (Z, as shown. It Will be understood, of course, that the mam h 1s connected to an air compressor Or steam supply to furnish the required pressure.

i flien the kiln is being burned, it Will be I seen that the air or other gas issuing from theopenings (Z underneath the burner will be delivered. against the bottom of the kiln or upon any fuel thereunder, and the force I of the blast will be destroyed and the air fuel, notwithstanding that it has been developed by us With particular reference to fine grades of anthracite. Moreover, it

should be understood that While it is has been described and explained in connection with the burning of ordinary brick, it is not limited thereto: and that the term kiln or brick kiln as used throughout the specification and in the claim is not used in a limiting sense but rather to indicate a typical case for the application of the invention. 1 V e claim as our invention: 4 A brick kiln comprising a series of firechambers built Within its Wall, opening to the outside and having also each an opening f to the interior of the kiln, a hollow burner in eachof said chambers, having discharge passages underneath, an air duct set along the outside of saidwall, and a feeder therefrom to each burner.

In testimony whereof, We have signed our names to this specification, in the presence of two subscribing Witnesses, this ltll day of February, 1913. CHRISTOPHER STEADMAN; HENRY 0. ROBINSON.

Witnesses: i v

JOHN W. THOMPSON, ALEXANDER S. Gnoss.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, 13.0. r 

